Hi,
I am testing some of my old styles on latest context and find that the background key of \startbackground and \starttextbackground doesn't work (\framed is working as expected). Here is a MWE:
\startuseMPgraphic{background:test} fill OverlayBox withcolor 0.75[red,white]; draw OverlayBox withcolor red withpen pencircle scaled 2bp; \stopuseMPgraphic
\defineoverlay[background:test][\useMPgraphic{background:test}]
\definetextbackground [testA] [ location=paragraph, background=background:test, frame=off, ]
\definebackground [testB] [ location=paragraph, background=background:test, frame=off, ]
\defineframedtext [testC] [ background=background:test, frame=off, width=broad, ]
\starttext \starttestA \input tufte \stoptestA
\starttestB \input tufte \stoptestB
\starttestC \input tufte \stoptestC \stoptext
testA gives nothing, testB gives a gray(!) background, and testC works as expected.
The output is attached. I am using 2024.05.31.
Aditya